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US 11,951,330 B2Granted
Multileaf collimator cone enabling stereotactic radiosurgery
AssigneeVarian Medical Systems, Inc.
InventorsCorey Zankowski, Sasa Mutic
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Abstract
An apparatus includes a first multileaf collimator comprising a plurality of pairs of beam-blocking leaves each comprising an end portion. The end portions of beam-blocking leaves of two adjacent pairs are configured to collectively form an aperture when the two adjacent pairs of beam-blocking leaves are closed. The aperture may be sized and shaped to allow a radiation beam to pass through for radiosurgery.
Claims18
An apparatus, comprising:
- a first multileaf collimator including a first plurality of pairs of first beam-blocking leaves each including an end surface, wherein the end surfaces of first beam-blocking leaves of two adjacent pairs have a first concave surface portion configured to collectively form an aperture when the two adjacent pairs of beam-blocking leaves are closed, and the end surfaces of first beam-blocking leaves other than the two adjacent pairs are chamfer leaves have a combination of a first convex surface portion and a first beveled flat surface portion at either side of the first convex surface portion;
- and
- a second multileaf collimator including a second plurality of pairs of second beam-blocking leaves, the second beam-blocking leaves of the second multileaf collimator including chamfer leaves having a combination of a second convex surface portion and a second beveled flat surface portion at either side of the second convex surface portion.
Dependencies are inferred from the claim text.